Implications of a rapidly varying FRB in a globular cluster of M81

Lu, W.; Beniamini, Paz; Kumar, Pawan

doi:10.1093/mnras/stab3500

Cited by 47 publications

(27 citation statements)

References 126 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It is associated with an old stellar population and has a modest , which is in sharp contrast to FRB 20121102A and FRB 20190520B. One possibility is that there are multiple kinds of sources that can emit FRBs, a point that has been argued based on burst rate and phenomenology 30 , 31 . Alternatively, the source properties may evolve as the source ages, the PRS fades, the event rate drops and the surrounding plasma dissipates 32 .…”

Section: Mainmentioning

confidence: 99%

A repeating fast radio burst associated with a persistent radio source

Niu

Aggarwal

et al. 2022

Nature

158

174

View full text Add to dashboard Cite

The dispersive sweep of fast radio bursts (FRBs) has been used to probe the ionized baryon content of the intergalactic medium1, which is assumed to dominate the total extragalactic dispersion. Although the host-galaxy contributions to the dispersion measure appear to be small for most FRBs2, in at least one case there is evidence for an extreme magneto-ionic local environment3,4 and a compact persistent radio source5. Here we report the detection and localization of the repeating FRB 20190520B, which is co-located with a compact, persistent radio source and associated with a dwarf host galaxy of high specific-star-formation rate at a redshift of 0.241 ± 0.001. The estimated host-galaxy dispersion measure of approximately $${903}_{-111}^{+72}$$ 903 − 111 + 72 parsecs per cubic centimetre, which is nearly an order of magnitude higher than the average of FRB host galaxies2,6, far exceeds the dispersion-measure contribution of the intergalactic medium. Caution is thus warranted in inferring redshifts for FRBs without accurate host-galaxy identifications.

show abstract

Section: Mainmentioning

confidence: 99%

A repeating fast radio burst associated with a persistent radio source

Niu

Aggarwal

et al. 2022

Nature

158

174

View full text Add to dashboard Cite

show abstract

“…Alternatively, MSPs may be produced by mergers of pairs of white dwarfs (e.g., Kremer et al 2021b;Schwab 2021). Depending on various physical processes, white dwarf mergers may alternatively lead to Type Ia supernovae (e.g., Webbink 1984), slowly spinning pulsars possibly connected to the "young pulsars" observed in several Milky Way globular clusters (e.g., Tauris et al 2013), or magnetars (e.g., King et al 2001), which may also connect with fast radio bursts similar to FRB 20200120E (e.g., Kremer et al 2021b;Bhardwaj et al 2021;Lu et al 2022). In an upcoming paper (C. S. Ye et al 2022, in preparation), we will implement the formation of MSPs through neutron star + main-sequence star TDEs and other aforementioned mechanisms within CMC, enabling us to track self-consistently the formation and subsequent dynamical evolution of these objects.…”

Section: Discussionmentioning

confidence: 99%

Formation of Low-mass Black Holes and Single Millisecond Pulsars in Globular Clusters

Kremer¹,

Ye²,

Kıroğlu³

et al. 2022

ApJL

View full text Add to dashboard Cite

Close encounters between neutron stars and main-sequence stars occur in globular clusters and may lead to various outcomes. Here we study encounters resulting in the tidal disruption of the star. Using N-body models, we predict the typical stellar masses in these disruptions and the dependence of the event rate on the host cluster properties. We find that tidal disruption events occur most frequently in core-collapsed globular clusters and that roughly 25% of the disrupted stars are merger products (i.e., blue straggler stars). Using hydrodynamic simulations, we model the tidal disruptions themselves (over timescales of days) to determine the mass bound to the neutron star and the properties of the accretion disks formed. In general, we find roughly 80%–90% of the initial stellar mass becomes bound to the neutron star following disruption. Additionally, we find that neutron stars receive impulsive kicks of up to about 20 km s−1 as a result of the asymmetry of unbound ejecta; these kicks place these neutron stars on elongated orbits within their host cluster, with apocenter distances well outside the cluster core. Finally, we model the evolution of the (hypercritical) accretion disks on longer timescales (days to years after disruption) to estimate the accretion rate onto the neutron stars and accompanying spin-up. As long as ≳1% of the bound mass accretes onto the neutron star, millisecond spin periods can be attained. We argue the growing numbers of isolated millisecond pulsars observed in globular clusters may have formed, at least in part, through this mechanism. In the case of significant mass growth, some of these neutron stars may collapse to form low-mass (≲3 M ⊙) black holes.

show abstract

“…The applicability of antenna mechanism for FRBs has been widely discussed and a few models based on it have been proposed [40,72,85,165]. Since FRBs are regarded to originate inside the magnetosphere, the diverse PA swing, nano-second variability and frequency drift can be explained by this mechanism [90,87,164]. However, a long-standing problem of this mechanism is the formation and maintenance of these bunches [139,23,67].…”

Section: Antenna Mechanismmentioning

confidence: 99%

Fast Radio Bursts

Xiao¹,

Wang²,

Dai³

2022

Preprint

View full text Add to dashboard Cite

The era of fast radio bursts (FRBs) was open in 2007, when a very bright radio pulse of unknown origin was discovered occasionally in the archival data of Parkes Telescope. Over the past fifteen years, this mysterious phenomenon have caught substantial attention among the scientific community and become one of the hottest topic in high-energy astrophysics. The total number of events has a dramatic increase to a few hundred recently, benefiting from new dedicated surveys and improved observational techniques. Our understanding of these bursts has been undergoing a revolutionary growth with observational breakthroughs announced consistently. In this chapter, we will give a comprehensive introduction of FRBs, including the latest progress. Starting from the basics, we will go through population study, inherent physical mechanism, and all the way to the application in cosmology. Plenty of open questions exist right now and there is more surprise to come in this active young field.

show abstract

Implications of a rapidly varying FRB in a globular cluster of M81

Cited by 47 publications

References 126 publications

A repeating fast radio burst associated with a persistent radio source

A repeating fast radio burst associated with a persistent radio source

Formation of Low-mass Black Holes and Single Millisecond Pulsars in Globular Clusters

Fast Radio Bursts

Contact Info

Product

Resources

About